267 lines
6.2 KiB
C
267 lines
6.2 KiB
C
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
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/*
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* Copyright 2014-2016 Freescale Semiconductor Inc.
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* Copyright 2016 NXP
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*
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*/
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#ifndef __FSL_DPAA2_GLOBAL_H
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#define __FSL_DPAA2_GLOBAL_H
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#include <linux/types.h>
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#include <linux/cpumask.h>
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#include "dpaa2-fd.h"
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struct dpaa2_dq {
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union {
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struct common {
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u8 verb;
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u8 reserved[63];
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} common;
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struct dq {
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u8 verb;
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u8 stat;
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__le16 seqnum;
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__le16 oprid;
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u8 reserved;
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u8 tok;
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__le32 fqid;
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u32 reserved2;
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__le32 fq_byte_cnt;
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__le32 fq_frm_cnt;
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__le64 fqd_ctx;
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u8 fd[32];
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} dq;
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struct scn {
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u8 verb;
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u8 stat;
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u8 state;
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u8 reserved;
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__le32 rid_tok;
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__le64 ctx;
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} scn;
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};
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};
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/* Parsing frame dequeue results */
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/* FQ empty */
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#define DPAA2_DQ_STAT_FQEMPTY 0x80
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/* FQ held active */
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#define DPAA2_DQ_STAT_HELDACTIVE 0x40
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/* FQ force eligible */
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#define DPAA2_DQ_STAT_FORCEELIGIBLE 0x20
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/* valid frame */
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#define DPAA2_DQ_STAT_VALIDFRAME 0x10
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/* FQ ODP enable */
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#define DPAA2_DQ_STAT_ODPVALID 0x04
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/* volatile dequeue */
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#define DPAA2_DQ_STAT_VOLATILE 0x02
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/* volatile dequeue command is expired */
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#define DPAA2_DQ_STAT_EXPIRED 0x01
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#define DQ_FQID_MASK 0x00FFFFFF
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#define DQ_FRAME_COUNT_MASK 0x00FFFFFF
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/**
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* dpaa2_dq_flags() - Get the stat field of dequeue response
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* @dq: the dequeue result.
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*/
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static inline u32 dpaa2_dq_flags(const struct dpaa2_dq *dq)
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{
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return dq->dq.stat;
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}
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/**
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* dpaa2_dq_is_pull() - Check whether the dq response is from a pull
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* command.
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* @dq: the dequeue result
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*
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* Return 1 for volatile(pull) dequeue, 0 for static dequeue.
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*/
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static inline int dpaa2_dq_is_pull(const struct dpaa2_dq *dq)
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{
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return (int)(dpaa2_dq_flags(dq) & DPAA2_DQ_STAT_VOLATILE);
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}
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/**
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* dpaa2_dq_is_pull_complete() - Check whether the pull command is completed.
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* @dq: the dequeue result
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*
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* Return boolean.
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*/
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static inline bool dpaa2_dq_is_pull_complete(const struct dpaa2_dq *dq)
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{
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return !!(dpaa2_dq_flags(dq) & DPAA2_DQ_STAT_EXPIRED);
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}
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/**
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* dpaa2_dq_seqnum() - Get the seqnum field in dequeue response
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* @dq: the dequeue result
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*
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* seqnum is valid only if VALIDFRAME flag is TRUE
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*
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* Return seqnum.
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*/
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static inline u16 dpaa2_dq_seqnum(const struct dpaa2_dq *dq)
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{
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return le16_to_cpu(dq->dq.seqnum);
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}
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/**
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* dpaa2_dq_odpid() - Get the odpid field in dequeue response
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* @dq: the dequeue result
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*
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* odpid is valid only if ODPVALID flag is TRUE.
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*
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* Return odpid.
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*/
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static inline u16 dpaa2_dq_odpid(const struct dpaa2_dq *dq)
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{
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return le16_to_cpu(dq->dq.oprid);
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}
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/**
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* dpaa2_dq_fqid() - Get the fqid in dequeue response
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* @dq: the dequeue result
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*
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* Return fqid.
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*/
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static inline u32 dpaa2_dq_fqid(const struct dpaa2_dq *dq)
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{
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return le32_to_cpu(dq->dq.fqid) & DQ_FQID_MASK;
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}
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/**
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* dpaa2_dq_byte_count() - Get the byte count in dequeue response
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* @dq: the dequeue result
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*
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* Return the byte count remaining in the FQ.
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*/
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static inline u32 dpaa2_dq_byte_count(const struct dpaa2_dq *dq)
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{
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return le32_to_cpu(dq->dq.fq_byte_cnt);
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}
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/**
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* dpaa2_dq_frame_count() - Get the frame count in dequeue response
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* @dq: the dequeue result
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*
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* Return the frame count remaining in the FQ.
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*/
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static inline u32 dpaa2_dq_frame_count(const struct dpaa2_dq *dq)
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{
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return le32_to_cpu(dq->dq.fq_frm_cnt) & DQ_FRAME_COUNT_MASK;
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}
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/**
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* dpaa2_dq_fd_ctx() - Get the frame queue context in dequeue response
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* @dq: the dequeue result
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*
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* Return the frame queue context.
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*/
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static inline u64 dpaa2_dq_fqd_ctx(const struct dpaa2_dq *dq)
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{
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return le64_to_cpu(dq->dq.fqd_ctx);
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}
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/**
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* dpaa2_dq_fd() - Get the frame descriptor in dequeue response
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* @dq: the dequeue result
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*
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* Return the frame descriptor.
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*/
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static inline const struct dpaa2_fd *dpaa2_dq_fd(const struct dpaa2_dq *dq)
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{
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return (const struct dpaa2_fd *)&dq->dq.fd[0];
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}
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#define DPAA2_CSCN_SIZE sizeof(struct dpaa2_dq)
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#define DPAA2_CSCN_ALIGN 16
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#define DPAA2_CSCN_STATE_CG BIT(0)
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/**
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* dpaa2_cscn_state_congested() - Check congestion state
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* @cscn: congestion SCN (delivered to WQ or memory)
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*
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i * Return true is congested.
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*/
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static inline bool dpaa2_cscn_state_congested(struct dpaa2_dq *cscn)
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{
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return !!(cscn->scn.state & DPAA2_CSCN_STATE_CG);
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}
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/* Data Path Order Restoration API
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* Contains initialization APIs and runtime APIs for the Order Restoration
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*/
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/** Order Restoration properties */
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/**
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* Create a new Order Point Record option
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*/
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#define OPR_OPT_CREATE 0x1
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/**
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* Retire an existing Order Point Record option
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*/
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#define OPR_OPT_RETIRE 0x2
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/**
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* struct opr_cfg - Structure representing OPR configuration
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* @oprrws: Order point record (OPR) restoration window size (0 to 5)
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* 0 - Window size is 32 frames.
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* 1 - Window size is 64 frames.
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* 2 - Window size is 128 frames.
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* 3 - Window size is 256 frames.
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* 4 - Window size is 512 frames.
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* 5 - Window size is 1024 frames.
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* @oa: OPR auto advance NESN window size (0 disabled, 1 enabled)
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* @olws: OPR acceptable late arrival window size (0 to 3)
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* 0 - Disabled. Late arrivals are always rejected.
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* 1 - Window size is 32 frames.
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* 2 - Window size is the same as the OPR restoration
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* window size configured in the OPRRWS field.
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* 3 - Window size is 8192 frames. Late arrivals are
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* always accepted.
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* @oeane: Order restoration list (ORL) resource exhaustion
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* advance NESN enable (0 disabled, 1 enabled)
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* @oloe: OPR loose ordering enable (0 disabled, 1 enabled)
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*/
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struct opr_cfg {
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u8 oprrws;
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u8 oa;
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u8 olws;
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u8 oeane;
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u8 oloe;
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};
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/**
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* struct opr_qry - Structure representing OPR configuration
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* @enable: Enabled state
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* @rip: Retirement In Progress
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* @ndsn: Next dispensed sequence number
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* @nesn: Next expected sequence number
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* @ea_hseq: Early arrival head sequence number
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* @hseq_nlis: HSEQ not last in sequence
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* @ea_tseq: Early arrival tail sequence number
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* @tseq_nlis: TSEQ not last in sequence
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* @ea_tptr: Early arrival tail pointer
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* @ea_hptr: Early arrival head pointer
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* @opr_id: Order Point Record ID
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* @opr_vid: Order Point Record Virtual ID
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*/
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struct opr_qry {
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char enable;
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char rip;
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u16 ndsn;
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u16 nesn;
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u16 ea_hseq;
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char hseq_nlis;
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u16 ea_tseq;
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char tseq_nlis;
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u16 ea_tptr;
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u16 ea_hptr;
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u16 opr_id;
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u16 opr_vid;
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};
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#endif /* __FSL_DPAA2_GLOBAL_H */
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